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Change the PassManagerBuilder (used by -O3) loop vectorizer flag from -vectorize to -vectorize-loops because we dont want to share the same flag as the bb-vectorizer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166937 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -468,9 +468,10 @@ Release Notes</a>.</h1>
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<p> Loop Vectorizer - We've added a loop vectorizer and we are now able to
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vectorize small loops. The loop vectorizer is disabled by default and
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can be enabled using the <b>-mllvm -vectorize</b> flag.
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can be enabled using the <b>-mllvm -vectorize-loops</b> flag.
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The SIMD vector width can be specified using the flag
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<b>-mllvm -force-vector-width=4</b>.
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The defaule value is <b>0</b> which means auto-select.
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<br/>
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We can now vectorize this code:
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@ -103,7 +103,8 @@ public:
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bool DisableSimplifyLibCalls;
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bool DisableUnitAtATime;
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bool DisableUnrollLoops;
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bool Vectorize;
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bool BBVectorize;
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bool LoopVectorize;
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private:
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/// ExtensionList - This is list of all of the extensions that are registered.
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@ -33,7 +33,10 @@
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using namespace llvm;
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static cl::opt<bool>
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RunVectorization("vectorize", cl::desc("Run vectorization passes"));
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RunLoopVectorization("vectorize-loops", cl::desc("Run the Loop vectorization passes"));
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static cl::opt<bool>
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RunBBVectorization("vectorize", cl::desc("Run the BB vectorization passes"));
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static cl::opt<bool>
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UseGVNAfterVectorization("use-gvn-after-vectorization",
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@ -52,7 +55,8 @@ PassManagerBuilder::PassManagerBuilder() {
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DisableSimplifyLibCalls = false;
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DisableUnitAtATime = false;
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DisableUnrollLoops = false;
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Vectorize = RunVectorization;
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BBVectorize = RunBBVectorization;
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LoopVectorize = RunLoopVectorization;
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}
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PassManagerBuilder::~PassManagerBuilder() {
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@ -185,7 +189,7 @@ void PassManagerBuilder::populateModulePassManager(PassManagerBase &MPM) {
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MPM.add(createLoopIdiomPass()); // Recognize idioms like memset.
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MPM.add(createLoopDeletionPass()); // Delete dead loops
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if (Vectorize) {
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if (LoopVectorize) {
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MPM.add(createLoopVectorizePass());
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MPM.add(createLICMPass());
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}
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@ -208,7 +212,7 @@ void PassManagerBuilder::populateModulePassManager(PassManagerBase &MPM) {
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addExtensionsToPM(EP_ScalarOptimizerLate, MPM);
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if (Vectorize) {
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if (BBVectorize) {
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MPM.add(createBBVectorizePass());
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MPM.add(createInstructionCombiningPass());
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if (OptLevel > 1 && UseGVNAfterVectorization)
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